Carbureter.



P. C. WAJIISQN.4

GARBURETER. APPLICATION FILED FEB. 5, 1912.

Patented NQv.12,192.

30 form pressure on the inflowing gasolene. w

' My invent-ion consists in certain details,

Lol-asia.

UNITED srafrns raannr orricii.

raamt o. Wasson, o1 ons MOINES; iowa.

oannunnrna Specification of Letters Patent.

rammed Nov. 12, 1912.;

Application led February 5,1912. Serial No. 675,667.

To ad 'who-miti may/ttonce'ln.;

Be it known that I, FRANK C. WATSON, a. 'citizen of the United States,residing at DesMoines, in the county of Polk and' State of Iowa, haveinventeda new and useful Calibur-eter, of which the following is aspecification.

fair may be manually regulated and provided .with means whereby thesuction from the Fengine automatically maintains a uniform richness ofmixture by increasing or decreasing the;A amount ofaii-and/ gasclenevapor delivered to the miXtu/re chamber.

A further object of my Lnventio'n is to pifovidea carburetor whereby therelative proportions of gasolenc and air may be regulated anduniformity" ot' inixturemain ltained without the use of a 'needle'valveor ia float. i

v 'WA further object is tro provide a carburetei having anair :pressurechamber connected with the intake tube for maintaining a uniin theconstruction, arranoement and coinbination of the various parts, wherebythe lobjects contemplated are attained, as here after more fully setfort-h, pointed out in my claims, and illustrated in the accompanyfingdrawings, in wliicli- Figure 1 shows a vertical,'central, sectional Viewthrough a carburetor embodying my invention. Fig. 2 shows a sectionalview on the line 2 2 of F ig'. 1, and Fig. 3 shows a detail sectionalview of some of the parts ofmyimprovcd carbureter. In the accompanyingdrawings, I- have used the referencenumeral 10 to indicate the body ofthe carburetin'g chamber of a carybureter, which is substantiallycylindrical in form. lAbove the'body'lO is a detachable top portion 11.At one side of the body 10 is a discharge opening 12, in which is a i.throttle valve 13 of ordinary construction'.

"In thelower end of the body l0 is an air intaketube 14. At one side ofthe body is a easing 15 of suitable form to receive the y partshereinafter described. Connecting the intake tube 14 with the interior'of the casing 15, is a passage way 1G. In the top 11 is a screwthreaded opening in which is mounted a screw 17, on the outer endof=which is a head 18. ln the inner end of the screw 17 is alongitudinal opening lor recess 19. The intake tube 14 extends withinthe carburetor body 10 to a point abovevthe bottom wall 2Q of the bodv10. Resting on the upper end of the intake tube 14 is an umbrella shapedvalve 21 having. a circumferential dowiiw'ardly extendino flange 22outside the tube 14, extending at an acute angle4 from the upper endthereof. Tl Variedin form it desired.

Slidably mounted in the lower end of the opening 19 is the upper end ofa rod 23, the

lower end of which is secured to the valve 21. Upon the' valve 21, is acentral down- 75 wardly extendingv lug 24. Between the lower end ot thescrew 17 and the upper side of the valve 21 is an extensible coil spring23a. Mounted within the casing 15, is a lever 25,

a port-ion of which extends through the opening 16 to a point bellow thelug 24. A link 26 is pivoted to the, end of the lever 25 and'to the lug'211. The other end 27 of the'v lever 25 is forked as shown -in Fig. 3.Slidably mounted in the casing 15 so as to be '85 capable of horizontalsliding movement, is a fulcrum 28, which rests beneath the forkedportion 27 oi' the lever 25. rlhe ulcrum 28 is provided with a screwthreaded, longitudinal opening in which is mounted a screw1 90 29, whichextends -to a point outside the casing' 15 and is provided at its outerend with a head 30. The screw 29'is rotatably* mounted in the wall ofthe casing 15 and I fix washers 31 on the'screw29 on each side 95 ofsaid wall. .In the upper portionof the casing 15 near the b'ody 10, isats{:rew threaded opening in which,v is mounted' a screw on which is ahead 33. The inner end oi'' the'screw 32is provided with a loii- 100vgitudinal. recess or opening 34.' Pivotally secured to the lever 25 is arod 35, the upper end of which is slidingly received in the opening 3&1.Between the lower end of the screw 32 and the lever 25 is mounted .aneX- 1054` tensible coil spring 36.0n therod35.

The lever 25, the fulcrum 28, the rod 35,

and the spring 36 are so arranged that the weight of one end of thelever25 tends to draw Asaid lever downwardly. The lever is v held inposition rest-ing upon the fulcrum 28, by said fulcrum, and bythe link26 se ie valve21 may be "0 from the Supply inni: "iowa iiirouggir iiwiuiviz 31j im'v'mf wail iiwrruf iii :i point f1 bore the mwbsi, pnri ui.iii wzxii in ih@ iiiwor pari, Oi" the inimior of iiiie Ciimni'viir 3f)jis Shown in Fig. i. The 11i-mer p; M1 iii? the i,ubu 41 :forms n X :rivesezii. fiobimg upon the uppm' and of ih@ i'siiiiii fili. is a wir@ 4:52.A rmi i3 ciiviiis iiilvwiiriiijf 'from iii@ valve 42 line tween the sidithe 'forked and 27 @if ihf: ierrr 25 to :i pn'rii l the iop or upper andof iillf ('iis'mir iii. xofi with@ 'rod 43 3115iJ xbov the :irma of theforkC-, portion 2T" n, wiis'imr -'-i-i. in the ripper end @if the cas--ing 15, *is a screw tl'ircmid ripening* in which is nmlmied :L srrew45.` on wiiih '51 :i henri 4G. The scrnw 15 am?. ih@ rmi iii i (i if 1mi the fui- ,i'rifriimf 'from hav mu of ihr fuicrum 2S@ 'viii tiroir 'imuutummcally r rudi Vaso i ai; with de. By ',"L EN), rick [10W w h im ever garer. 32 mui iii@ rmi 3F. of The sifrciv 4;-5 n, ffimiriii" openingiif? in wirii i siiriii 'uprcr und oi! the rfid fifi. Rum end of iii@ ew4i? mici Hw extefifa'le e i fiS. tube i9 ixiiemis 'from part of i'ireinieror WE in the body through 10 to fi poni mm1* iba .icwlr chamber 3S.

The paris ilereu'imfore dear-,Ni arranged iimt im pim 'AC/ai mlm yoperaie in the oiimfmg mnmwi': {Rasoir} S0011 as the gnsoicn@'rrfiifiisisz the 'icifui wi iin:

Mai@ iii i' Tiwiiiie ririw 42. 1&5; ih@ engin@ m5, varied, ii imiiifiTim Suction iihrmigh iii@ iizi'ic :iw 'iiiif ciirimfirming iwf. L!! :itreihig chamber within the. ii iii. i'imifi im iiw 11mm* En :iwi

sixg'iiiiy raise the faire 21.

'imriwmt iziw valve Ti "iig, ily rinsed on the, iuiftri Olli?.

ending into the interior of said gasolee reeeiringchamber, valves forclosing the ends ci .saidintake tubes, meansfor normally holding saidvalves seated, `a vlever per-atively connected with both -valves ,so

LAthat when the valve on the air inlet" 1tube s raised, the l valve ofthe gasoleneinlet ube is raised in unison. A l

23. ln a device of the class described, a carbureting chamber, an outlettube com# muni'cating therewith, an air inlet tube extending into saidcarbureting chamber through the lower wall thereof, a valve resting en,the inner' end of said air inlet tube, and yielding means for normallyholdingv said valve in its seated position, a casing adjacentto saidcarbureting chamber,` the interior ci' which communicates with said airinlet tube and has adownwardly extending portion designed to receivegasolene, a tube extending from apoint near the bottom of said.downwardly extending portion tothe interior of said carbureting chamber,a gasolene inlet tube extending'to a point in the interior of saidcasing near the bottom of theJ downwardly extending porl'tion thereof, avalve for closing the inner end of said gasolene inlet tube, a fulcrumslidably mounted in said casing, a lever restng upon'said fulcrum nearone end and operatively connected with vsaid rst valve at the other end,means whereby the rais'n inK etI said lever raises said second valve,v.ding means t'or holding said second e its seated position, andyielding s *for holding said lever at the lower -i of movement.

ln a device of the class described', a carburetingchamber, an outlettube communicating therewith, an air inlet tube extending into saidcarbure'ting chamber through the lower wall thereof, a valve resting onVinner end of said air inlet tube, and yielding means Jfor normallyholding said valve in its seated position, acasing adjacent to saidcarbureting chamber, the interior of which communicates with said airinlet tube and has a downwardly extending portion desigmed'to4 receivegasolene, a tube extending from a point near the bottom of saiddownwardly extending portion lo the interior of said carburetingchamber, a ,sasolene inlet tube extending to a point lo i ot thedownwardly extending portion hwcoi, a valve for closing the inner end ofsaid 4olene inlet tube, a fulcrum slidably mounted in said casing, alever resting. upon :said ifulcrum near one end and operatively' 'tedwith said .first valve at the other cans whereby the raising of saidlever sa' l second valver yielding means for .flifi second valve, in itsseated lo yielding means for holding said at the lower position of itsmovement,

in the interior of said casing near the bot-v said second named yieldingmeans being located bttween said :tulcrum and said first valve4and-,said last named yielding means being located between said secondyielding means and said rst named valve.

et. Ina' device ,of the 'class' described, a carbureting chamber, anoutlet tube communicating therewith, anair inlet' tube extending intosaid carbureting chamber through the lower Wall thereof, a valve rest- 75 .ing .on lthe inner end of said nir inlet tube, yielding means fornormally .holding said valve in, its seated position, a casing adjacentto said carbureting chamber, the interior of which communicates withsaid Vair inlet. tube and has a downwardly extending portion designed toreceive gasolene, a tube extending froma point near the bottom ofsaiddownwardly extending portion to theinterior of said'carbureting chamber,a g5 gasolene inlet tube extending to a point in the'interior ofsaidcasing near the bottom of the.downwardly'extending portion thereof, avalve for closing the' inner end of said gasolene` inlet tube, a fulcrumslidably 90 mounted in said casing, a lever/resting uponv said fulcrumnear one end and operatively vconnected with said first valve at theother end, means Awhereby the raising of said lever raises saidsecondvalve, yielding means for holding said second valve in its seatedposition, and yielding means for" holding said lever at the lowerposition of its movement, an air pressure chamber, a gasolene inlet tubecommunicating with the lower end .100 thereof, said first named gasoleneinlet tube being extended into said air pressure cham'- ber to apointnear the lower end thereof.

5. In a device of the class described, a' carbureting chamber, an outlettube communicating therewith, an air inlet tube extending into Vsaidcarbureting chamber through the lower wall thereof, a valve resting onthe inner end of baid air inlet tube,

and yielding means forlnormally holding 11()` said valve in its seatedtposition, a caslngl adjacent to said carbueting, chamber, the interiorof which ,communicates with the said air inlet tube and has a downwardlyextending 'portion designed to receive jgas- 115 olene, a tubeextend-ing from a 'point near the bottom of said. downwardlyextendingportion to the interior of saidfcarbureting chamber, a gasoleneinlet 'tube extending to a point in the interior of said casing near1'20 the bottom of the 'downwardly' extending Y' portion thereof, avalve'for closingA the inner end of said gasolene inlet tube, a fulcrumslidably mounted in said casing, means for controlling said ulcrum fromoutside said casing; a lever having a forked'endresting on said fulcrum,the other end oi said lever being operatively connected with said' firstvalve, a stem on said second valve extending v lbetween the sides ofsaid forked end, a'13o washer (m said Stem above: said @v9-'1) by saidstem is mi,

n, t mi (fimrgv lub bottom of said dmww mim-un uppcr my? wif willi vdyextending p0r-

